I have 2 new users who have the same privileges, should I assign them the same UID or not and why?

I have 2 new users, Jack and Annie, they have the same privileges, should I assign them the same UID or not and why?

enter image description here


Solution 1:

User names and UID are unique identifiers for the users registered on the system. Assigning them a same UID is not an option.